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What's the meaning of “=>” (an arrow formed from equals & greater than) in JavaScript?
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What It Is
This is an arrow function. Arrow functions are a short syntax, introduced by ECMAscript 6, that can be used similarly to the way you would use function expressions. In other words, you can often use them in place of expres...
How to get the first element of an array?
How do you get the first element from an array like this:
31 Answers
31
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What is the reason for a red exclamation mark next to my project in Eclipse?
...ave a red exclamation mark over my project name in Eclipse, looking like this - .
29 Answers
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Why can't the tag contain a tag inside it?
As far as I know, this is right:
5 Answers
5
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What is the best way to initialize a JavaScript Date to midnight?
What is the simplest way to obtain an instance of new Date() but set the time at midnight?
9 Answers
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Easy idiomatic way to define Ordering for a simple case class
I have a list of simple scala case class instances and I want to print them in predictable, lexicographical order using list.sorted , but receive "No implicit Ordering defined for ...".
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How to set JFrame to appear centered, regardless of monitor resolution? [closed]
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I always did it in this way:
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
this.setLocation(dim.width/2-this.getSize().width/2, dim.height/2-this.getSize().height/2);
where this is the JFrame involved.
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How to get a list of current open windows/process with Java?
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This is another approach to parse the the process list from the command "ps -e":
try {
String line;
Process p = Runtime.getRuntime().exec("ps -e");
BufferedReader input =
new BufferedReader(new InputStr...
Why are flag enums usually defined with hexadecimal values
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Rationales may differ, but an advantage I see is that hexadecimal reminds you: "Okay, we're not dealing with numbers in the arbitrary human-invented world of base ten anymore. We're dealing with bits - the machine's world - and we're gonna play by its rules." Hexadecim...
How to detect the currently pressed key?
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if ((Control.ModifierKeys & Keys.Shift) != 0)
This will also be true if Ctrl+Shift is down. If you want to check whether Shift alone is pressed,
if (Control.ModifierKeys == Keys.Shift)
If you're in a class that inherits Control (such as a form), you can remove the Cont...